When using your main content feed to share posts via buffer or other services, it is crucial that your feed validates cleanly.
![[Valid RSS]](/wp-content/themes/valid-rss-rogers.png "Validate my RSS feed")
There are always things in the generated WordPress content that can break your feed validation. Here some things to cleanup or alter your delivered feed content.
is_feed()
Check for syndication request. This tag is not typically used by users; it is used internally by WordPress and is available for Plugin Developers.
Check for feed syndication in your themes functions.php
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if (is_feed()) { /.. tweaks go here ../ } |
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function rss_noiframe($content) { $content = preg_replace( '/<iframe(.*)\/iframe>/is', '', $content ); return $content; } add_filter('the_excerpt_rss', 'rss_noiframe'); add_filter('the_content_feed', 'rss_noiframe'); |
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function rss_nocomments($content) { global $post; $post->comment_status="closed"; } add_filter('the_excerpt_rss', 'rss_nocomments'); add_filter('the_content_feed', 'rss_nocomments'); |
The sizes attribute breaks feed validation, here how to clean it up.
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function no_responsive_image_feeds() { add_filter( 'max_srcset_image_width', function() { return 1; } ); } add_action('rss2_head', 'no_responsive_image_feeds' ); add_action('atom_head', 'no_responsive_image_feeds' ); add_action('rss_head', 'no_responsive_image_feeds' ); |
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if (is_feed()) { function feedFilter($query) { if ($query->is_feed) { $query->set('post_type','any'); } return $query; } add_filter('pre_get_posts','feedFilter'); } |
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if (is_feed()) { function feedFilter($query) { if ($query->is_feed) { $query->set('posts_per_page','11'); } return $query; } add_filter('pre_get_posts','feedFilter'); } |
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if (is_feed()) { function feedFilter($query) { if ($query->is_feed) { $query->set('category_name', 'my-special-cat'); } return $query; } add_filter('pre_get_posts','feedFilter'); } |
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